US10745944B2 - Motor vehicle door lock - Google Patents

Motor vehicle door lock Download PDF

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Publication number
US10745944B2
US10745944B2 US15/024,419 US201415024419A US10745944B2 US 10745944 B2 US10745944 B2 US 10745944B2 US 201415024419 A US201415024419 A US 201415024419A US 10745944 B2 US10745944 B2 US 10745944B2
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Prior art keywords
lever
motor vehicle
accordance
vehicle door
transfer lever
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US15/024,419
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US20160281394A1 (en
Inventor
Thorsten Bendel
Michael Scholz
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Kiekert AG
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Kiekert AG
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Assigned to KIEKERT AKTIENGESELLSCHAFT reassignment KIEKERT AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BENDEL, THORSTEN, SCHOLZ, MICHAEL
Publication of US20160281394A1 publication Critical patent/US20160281394A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
    • E05B77/04—Preventing unwanted lock actuation, e.g. unlatching, at the moment of collision
    • E05B77/06—Preventing unwanted lock actuation, e.g. unlatching, at the moment of collision by means of inertial forces
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
    • E05B81/04—Electrical
    • E05B81/06—Electrical using rotary motors

Definitions

  • the invention relates to a motor vehicle door latch, with a locking mechanism, furthermore with an activation lever system working on the locking mechanism, and with a locking element, which disables the activation lever system when acceleration forces of a specified magnitude occur, for example in the event of an accident.
  • Active systems are characterized by a movement occurring both for severe and slight acceleration of the latch kinematics or the motor vehicle door latch and in particular the activation lever system in order to attain safe functionality over the entire lifetime.
  • passive systems only react in the case of unusually severe acceleration, i.e. in the case of accident.
  • a corresponding handle can only be activated in a release position of the mass lock or the pivotable locking element. On the contrary, the handle is blocked in the case of a crash.
  • the necessary and relatively complex locking element not only increases the mass of the known external door handle significantly, but considerable costs are also associated with it.
  • the invention is based on the technical problem of further developing a motor vehicle door latch of the construction described at the start in such a way that costs and weight are reduced compared to previous designs with integrity functionality.
  • a class-specific motor vehicle door latch in accordance with the invention is characterized in that the locking element is formed as a transfer lever impingeable by a bolting unit between the activation lever system and the locking mechanism.
  • the design is furthermore such that the bolting unit blocks the transfer lever mechanically in the “bolted” position.
  • the coupling lever serves this purpose.
  • the “unbolted” position corresponds to the bolting unit and consequently the motor vehicle door latch in accordance with the invention overall that the bolting unit enables a freewheel for the transfer lever in the relevant “unbolted” position.
  • the bolting unit or the coupling lever impinged by the bolting unit is mechanically propelled in such a way that the transfer lever can execute a freewheel vis-à-vis the coupling lever.
  • the relevant coupling lever ensures that the transfer lever is blocked in the “bolted” position.
  • the transfer lever assumes the “bolted” position as the basic setting or rest setting.
  • a so-called normal activation initially transfers the transfer lever into its “unbolted” position with the aid of the activation lever system.
  • the transfer lever is coupled with the activation lever system.
  • the further movement of the activation lever system with this normal activation now opens up the possibility of the pawl being directly or indirectly raised from the catch as a component of the locking mechanism with the aid of the transfer lever.
  • the transfer lever ensures opening of the locking mechanism.
  • a scheduled movement of the locking element or the transfer lever in accordance with the invention corresponds to this, consequently, hardenings, corrosions, etc. are not to be feared. Instead, the durable functional safety of the transfer lever is guaranteed.
  • the circumstance that the transfer lever can be transferred from its “unbolted” position to its “bolted” position for example with the aid of the bolting unit also contributes to this.
  • the bolting unit works mechanically on the coupling lever which pivots the transfer lever. A regular activation of the locking element or the transfer lever in accordance with the invention is also ensured as a result.
  • the bolting unit can basically involve a central bolting unit.
  • the activation lever system accomplishes an idling vis-à-vis the transfer lever.
  • the transfer lever remains in its “bolted” functional position. It therefore does not come about that the activation lever system and the transfer lever are mechanically connected by means of the coupling located between them. Instead, in the case of a crash the transfer lever retains its position, whereas the activation lever system pivots. As a consequence hereof, the transfer lever can also not open the locking mechanism directly or indirectly and consequently accomplishes the desired locking effect.
  • the activation lever system transfers the transfer lever into the “unbolted” position to open the locking mechanism.
  • the activation lever system is coupled with the transfer lever or the transfer lever is coupled vis-à-vis the activation lever system.
  • the activation lever system can work mechanically on the transfer lever and ultimately ensure during further activation that the locking mechanism is directly or indirectly opened with the aid of the pivoted transfer lever.
  • the activation lever system and the transfer lever are connected to one another by joints.
  • the coupling executed here is ensured on the one hand by the connection of joints and a spring connecting the activation lever system and the transfer lever on the other hand.
  • the spring may be a leg spring which is connected to one of the (joint) bolts defining the joint connection.
  • a stop is usually provided for the transfer lever. This stop may be firmly situated in a latch case or a latch housing.
  • the transfer lever can pivot especially simply or by slight force and on the other hand solid designs of the transfer lever are unnecessary. Because such solidly constructed mass locks are typically (only) used where a shifting of the center away from the rotational axis is consciously necessary.
  • the center of mass is arranged in the area of the rotational axis, recourse can be had to a conventional or almost conventional design of the transfer lever, namely one in which the center of mass and the rotational axis coincide, as is the case in most multiple-arm pivoting levers.
  • the transfer lever is designed as such a multiple-arm pivoting lever.
  • the motor vehicle door latch in accordance with the invention initially possesses a considerably reduced weight compared to the state of the art.
  • the locking element or the mass lock is designed as a transfer lever in the present case, which is executed in the form of a multiple-arm lever with a center of mass in the area of its rotational axis.
  • the transfer lever in accordance with the invention is respectively pivoted around its rotational axis during normal activation and also during bolting, i.e. the functional safety throughout the entire lifetime of the motor vehicle door latch can be safely guaranteed.
  • a further advantage is that the transfer lever is only mechanically connected with the activation lever system by engagement of the coupling for opening of the locking mechanism in normal activation. This means that for an operator no significantly increased activation forces arise here as consistently observed in the state of the art in the active mass locks otherwise used.
  • a solid design of the locking element or transfer lever can be dispensed with also contributes to this described low activation force.
  • a further and special advantage is that the locking element or the transfer lever are functionally integrated into the motor vehicle door latch so to speak and therefore represent no additional component which needs to be manufactured separately. Instead, the transfer lever functions comparably to a triggering lever for the locking mechanism. What is more, it is even conceivable for the transfer lever to undertake a total of three functions, namely the function of the locking element, the function of the triggering lever for the locking mechanism and finally the function of a bolting lever.
  • FIG. 1 a detailed overview of the motor vehicle door latch in accordance with the invention
  • FIG. 2A to 2C the object in accordance with FIG. 1 in the “unbolted” position 15 and with normal activation
  • FIG. 3A to 3C the object in accordance with FIG. 2A to 2C in the event of a crash
  • FIG. 4A to 4C the motor vehicle door latch in accordance with FIG. 1 in its “bolted” position 20 and a pertaining functional procedure.
  • a latch housing 1 is initially recognized which can be a latch case and/or a latch cover and which stores and accommodates the individual elements described in detail hereinafter.
  • a locking mechanism 2 , 3 is executed, which as known comprises a catch 2 and a pawl 3 .
  • the catch 2 is rotatably stored on a bolt defining a rotational axis 4 in the latch housing 1 .
  • the same applies to the pawl 3 which is rotatably housed in the lock housing 1 by a bolt defining a further rotational axis 5 .
  • An activation lever system 6 a , 6 b works on the locking mechanism 2 , 3 .
  • the activation lever system 6 a , 6 b comprises two lever sections 6 a , 6 b of an external activation lever 6 a , 6 b connected by joints.
  • the lever sections 6 a , 6 b are—as stated—connected by joints via a joint bolt 7 connecting them.
  • a spring 8 is connected to the joint bolt 7 .
  • the spring 8 is a leg spring 8 , which tensions the two lever sections 6 a , 6 b with one another in such a way or connects them springily in such a way that with the aid of the spring 8 a force is applied in a clockwise direction with regard to the joint bolt 7 , as indicated by a relevant arrow in FIG. 1 .
  • the force of the spring 8 therefore ultimately ensures that the lever section 6 a is moved onto the lever section 6 b with reduction of the angle spanned between them.
  • a stop 10 for the rest position of the activation lever system 6 a , 6 b ensures that the two lever sections 6 a , 6 b act in this rest position like a universal lever or external activation lever 6 a , 6 b.
  • An external door handle 9 only indicated by an arrow is provided for for the impingement of the activation lever system 6 a , 6 b or the external activation lever 6 a , 6 b.
  • the activation lever system 6 a , 6 b can fundamentally also be an internal activation lever system, instead of the external activation lever system depicted in the execution example. Then the external activation lever 6 a , 6 b is designed as an internal activation lever. However, this is shown just as little and for reasons of clarity, how the further procedure in accordance with which both an internal activation lever system and also an external activation lever system are generally implemented for such motor vehicle door latches.
  • a bolting unit 11 , 12 is executed.
  • the bolting unit 11 , 12 consists of an electrical motor 11 and a driven pulley 12 pivotable by the electrical motor 11 or its pinion shaft. With the aid of the electrical motor 11 the driven pulley 12 can be pivoted in rotations in a clockwise direction and an anti-clockwise direction.
  • a coupling lever 13 connected by joints to the driven pulley 12 can move in a linear manner. Essentially, two different basic settings of the coupling lever 13 are implemented and defined.
  • the position of the coupling lever 13 in FIG. 2A to 2C and in FIG. 3A to 3C belongs to the “unbolted” functional position of the bolting unit 11 , 12 .
  • the position of the coupling lever 13 in FIG. 4A to 4C and in FIG. 1 belongs to the “bolted” functional position of the bolting unit 11 , 12 .
  • a transfer lever 14 to be described in further detail below can accomplish a free wheel vis-à-vis the coupling lever 13 .
  • the relevant transfer lever 14 is respectively blocked in the “bolted” position of the bolting unit 11 , 12 in accordance with the depictions in FIGS. 1 and 4A to 4C .
  • the previously discussed transfer lever 14 is a locking element 14 within the scope of the invention which disables the activation lever system 6 a , 6 b when acceleration forces F of a specified magnitude occur, for example in the event of an accident.
  • the crash is depicted in FIG. 3A to 3C .
  • the acceleration forces F in question deflect the activation lever system 6 a , 6 b and distance themselves from the stop 10 for the rest position that such deflections of the activation lever system 6 a , 6 b correspond however to a freewheel of the activation lever system 6 a , 6 b vis-à-vis the transfer lever 14 remaining in its position, which consequently cannot open the locking mechanism 2 , 3 either directly or indirectly, as explained in further detail hereinafter.
  • the transfer lever 14 functions as a locking element 14 or mass lock and with the occurring acceleration forces F of a specified magnitude prevents unintentional opening of the motor vehicle door latch or a motor vehicle door equipped therewith.
  • the locking element 14 is not only designed as a transfer lever 14 , but the transfer lever 14 can also be impinged by the bolting unit 11 , 12 .
  • the transfer lever 14 is arranged between the activation lever system 6 a , 6 b and the locking mechanism 2 , 3 .
  • the transfer lever 14 not only functions as a locking element 14 or mass lock, but ultimately also assumes the function of a triggering element or triggering lever, in such a way that with its help the locking mechanism 2 , 3 can be directly or indirectly opened.
  • the transfer lever 14 in its unbolted state and with so-called normal activation of the activation lever system 6 a , 6 b in the functional sequence in accordance with FIG. 2A to 2C at the end of the movement is able to lift the pawl 3 from the catch 2 , as depicted in FIG. 2C .
  • the transfer lever 14 constitutes a component of a bolting lever chain 11 , 12 , 13 , 14 so to speak.
  • This bolting lever chain 11 , 12 , 13 , 14 consists of the bolting unit 11 , 12 , the coupling lever 13 and the stated transfer lever 14 . Consequently, the practically triple functionality of the transfer lever 14 already described at the start as a locking element 14 or mass lock, as a triggering lever for the locking mechanism 2 , 3 and finally as a component of the bolting lever chain 11 , 12 , 13 , 14 and thus as a type of bolting lever is declared.
  • the transfer lever 14 assumes the “bolted” position as a basic position.
  • This basic position is depicted in FIG. 1, 2A, 3A to 3C and finally 4 A to 4 C.
  • the functional position in accordance with FIGS. 2B and 2C corresponds to the transfer lever 14 assuming or being able to assume the “unbolted” position, because in the functional sequence depicted in FIG. 2A to 2C the coupling lever 13 permits a freewheeling of the transfer lever 14 , as explained in further detail hereinafter.
  • a so-called normal activation is depicted, in which the activation lever system 6 A, 6 B initially transfers the transfer lever 14 into the “unbolted” position in accordance with FIG. 2B and then the transfer lever 14 coupled vis-à-vis the activation lever system 6 A, 6 B ultimately ensures the opening of the locking mechanism 2 , 3 in accordance with the depiction in accordance with FIG. 2C .
  • the activation lever system 6 A, 6 B or the external activation lever system 6 A, 6 B and the transfer lever 14 are joined to one another.
  • a further joint bolt 15 is executed here.
  • a spring 16 which is arranged on the joint bolt 15 or connected to the joint bolt 15 .
  • the spring 16 is a leg spring 16 .
  • a stop 17 for the transfer lever 14 ensures that the transfer lever 14 maintains its rest position or the “bolted” position shown there and is not pivoted by the spring force 16 in the direction on the external activation lever 6 a , 6 b in an anti-clockwise direction around the joint bolt 15 as a rotational axis 15 .
  • the transfer lever 14 can be pivoted around a rotational axis 18 vis-à-vis the latch housing 1 .
  • the transfer lever 14 is designed as a three-armed lever in the present case, whereby the stop arm 14 a of the transfer lever 14 is adjacent on the stop 15 in the rest position in accordance with FIG. 1 .
  • the triggering arm 14 b ensures on the other hand within the scope of the functional position in accordance with FIG. 2C that with its help the pawl 3 is lifted from the catch 2 or the locking mechanism 2 , 3 experiences an opening with normal activation.
  • a rotary arm 14 c of the transfer lever 14 is then provided for, which defines the rotational axis 18 and also demonstrates the center of gravity of the transfer lever 14 envisaged in the area of the rotational axis 18 .
  • FIG. 2A to 2C the movement process during normal activation is depicted.
  • the external activation lever 6 a , 6 b is (slowly) pivoted by an operator in such a way that the operator impinges the external door handle 9 and thus pivots the external activation lever 6 a , 6 b during transition from FIG. 2A to FIG. 2B around the bolt or joint bolt 15 as a rotational axis 15 in an anti-clockwise direction.
  • the bolting unit 11 , 12 or the entire bolting chain 11 , 12 , 13 , 14 is in its “unbolted” position during this normal activation. Consequently, as a result of the pivoting movement of the external activation lever 6 a , 6 b the transfer lever 14 engages into the activation lever system 6 a , 6 b.
  • the pivoting movement of the external activation lever 6 a , 6 b in an anti-clockwise direction around the axis 15 initiated by the operator or user ensures that the transfer lever 14 is “taken along” in this process because the external activation lever 6 a , 6 b on the one hand and the transfer lever 14 on the other hand are mechanically connected by the spring 16 pre-stressed in the direction of this anti-clockwise direction movement.
  • This means that the transfer lever 14 is engaged in this process vis-à-vis the activation lever system 6 a , 6 b.
  • the transfer lever 14 is also pivoted around its axis 18 in an anti-clockwise direction and accordingly leaves its “bolted” position in accordance with FIG. 2A and on the other hand transfers into an “unbolted” position in accordance with FIG. 2B .
  • Such a movement is permitted because the bolting unit 11 , 12 is also in its “unbolted” position and the coupling lever 13 permits relevant freewheeling of the transfer lever 14 vis-à-vis the coupling lever 13 or a bolt 13 a there.
  • the triggering arm 14 b of the transfer lever 14 finally functions like a triggering element working on the locking mechanism 2 , 3 or a relevant triggering lever.
  • the transfer lever 14 is unable to follow the rapid movement of the activation lever system or the external activation lever 6 a , 6 b due to its mass inertia. Instead, the transfer lever 14 remains in the “bolted” position in accordance with FIG. 3A due to its mass inertia. This means that during the deflection of the external activation lever 6 a , 6 b during transition to FIGS. 3B and 3C the transfer lever 14 retains its originally assumed “bolted” position in accordance with FIG. 3A .
  • the external activation lever 6 a , 6 b is distanced from its stop 10 for the rest position without being able to take the transfer lever 14 with it. Consequently, the triggering arm 14 b of the transfer lever 14 is unable to be able to interact with the pawl 3 in the opening sense, as becomes clear with maximum deflection of the activation lever system 6 a , 6 b in accordance with the depiction in accordance with FIG. 3C .
  • FIG. 4A to 4C finally the scenario is depicted in which the bolting unit 11 , 12 and consequently the motor vehicle door latch overall is located in the “bolted” position.
  • the transfer lever 14 is blocked in this position with the aid of the coupling lever 13 . Because the coupling lever 13 with its bolt 13 a ensures that this bolt 13 a holds the triggering arm 14 b of the transfer lever 14 firm and accordingly the transfer lever 14 cannot accomplish any pivoting movements in an anti-clockwise direction in this “bolted” position, as would be necessary for the unbolting and finally opening of the locking mechanism 2 , 3 in accordance with the functional sequence in accordance with FIG. 2A to 2C .

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  • Lock And Its Accessories (AREA)
US15/024,419 2013-09-27 2014-09-09 Motor vehicle door lock Active 2037-04-25 US10745944B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102013110756.7 2013-09-27
DE102013110756 2013-09-27
DE102013110756.7A DE102013110756A1 (de) 2013-09-27 2013-09-27 Kraftfahrzeugtürschloss
PCT/DE2014/100321 WO2015043575A1 (de) 2013-09-27 2014-09-09 Kraftfahrzeugtürschloss

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US20160281394A1 US20160281394A1 (en) 2016-09-29
US10745944B2 true US10745944B2 (en) 2020-08-18

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ID=51845259

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US15/024,419 Active 2037-04-25 US10745944B2 (en) 2013-09-27 2014-09-09 Motor vehicle door lock

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US (1) US10745944B2 (zh)
EP (1) EP3060735B1 (zh)
CN (1) CN105765143B (zh)
DE (2) DE102013110756A1 (zh)
WO (1) WO2015043575A1 (zh)

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Publication number Priority date Publication date Assignee Title
US20180355641A1 (en) * 2015-08-25 2018-12-13 Brose Schliesssysteme Gmbh & Co. Kommanditgesellschaft Motor vehicle lock
US11525288B2 (en) * 2017-10-20 2022-12-13 Kiekert Ag Motor vehicle locking system with an electrical opening device

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US20160258194A1 (en) * 2015-03-06 2016-09-08 Brose Schliesssysteme Gmbh & Co. Kg Motor vehicle lock
DE102015205345A1 (de) * 2015-03-24 2016-09-29 Kiekert Ag Betätigungseinrichtung für ein Kraftfahrzeugelektroschloss mit Federspeicher
DE102015118860A1 (de) * 2015-11-04 2017-05-04 Kiekert Ag Kraftfahrzeugschloss
US10697205B2 (en) * 2017-02-15 2020-06-30 Gecom Corporation Vehicle door latch device
DE102017008519A1 (de) * 2017-09-09 2019-03-14 Daimler Ag Zentralverriegelungseinrichtung für ein Türschloss mit Unfall-Erkennungseinrichtung
DE102019127445A1 (de) * 2019-10-11 2021-04-15 Kiekert Aktiengesellschaft Kraftfahrzeugschloss, insbesondere Kraftfahrzeugtürschloss

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180355641A1 (en) * 2015-08-25 2018-12-13 Brose Schliesssysteme Gmbh & Co. Kommanditgesellschaft Motor vehicle lock
US11643851B2 (en) * 2015-08-25 2023-05-09 Brose Schliesssysteme Gmbh & Co. Kommanditgesellschaft Motor vehicle lock
US11525288B2 (en) * 2017-10-20 2022-12-13 Kiekert Ag Motor vehicle locking system with an electrical opening device

Also Published As

Publication number Publication date
EP3060735B1 (de) 2019-10-30
EP3060735A1 (de) 2016-08-31
CN105765143B (zh) 2019-04-19
DE102013110756A1 (de) 2015-04-02
CN105765143A (zh) 2016-07-13
US20160281394A1 (en) 2016-09-29
WO2015043575A1 (de) 2015-04-02
DE112014004434A5 (de) 2016-08-04

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